Holding members for reenforcement tensioning means



July 12, 1932. 1,867,185

HOLDING MEMBERS FOR REENFORCEMENT TENSIONING MEANS Filed March 25, 1951 muse INVENTOR -5 are strut wedges.

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HENRY:SORE1\TSEN, or SAN FRANCISCO, cA ironNIA- m O FICE.

HOLDING MEMBERS non RE'ENFQR GEMENT 'rnnslonmo MEANS 1 I i Application filed March 25,

Myinvention relatesto a modification of the construction disclosed in my U. S. Patent No. 1,785,214, Dec. 16th, 1980, and while my invention may be used for any purpose for which it is adapted, I have de scribed it applied to fireproof floors in the following specification and. its accompanying drawing.

In the drawing Fig. 1 is a plan view illustrating my invention. I

Fig. 2 is a section of Fig. 1 taken at A-A.

Fig. 8 is a section of Fig. 1 taken at B-B, but to which I have added the forms and the concrete for the floors.

Fig. 4 is an elevationlooking from C-C on Fig. 1.

Fig. 5 is an elevation looking from DD on Fig. 1.

In the drawing, where similar numerals designate similar parts, numeral 1 designates a pair of opposed beams. 2 designates another pair of opposed beams. 8 designates upright strut holders. 4 designates struts. 6 are flanges on struts 4. 7 are other struts. 8 are the reenforcements. 9 are flanges on beams 1 and 2. 10 are bars. 11 are rivets. 12 are plates. 18 are loops in reenforcements 8. ments 8. 15 are wedges for loops 18. 16 are concrete forms. 17 designates the concrete.

Dealing with Fig. 1 :The one pair of opposed beams 1 and the other pair of opposed beams 2 form a bay in a fireproof fioor.

These two-pairs of beams 1 and 2 are firmly welded together. Upon uprights 3, as shown in Fig. 2 and in Fig. 8, I place spaced strut members 4, which reach between and contact the webs of beams 1. In order to give these strut members 4 a snug fit against the webs of beams 1, I tap wedges 5 between the one end of strut members 4 and the web of beam 1. Along the bottom edges of strut members 4 I attach flanges 6, to whichI will make further reference below; Strut members 7 -Flanges 6 serve the purpose to hold strut 14 are ends of reenforce- 1931. $eria1 at. 525,184.

members-7 in place, and these strut members 7 form, between each of strut members 4, a lateral strut formation in their relation to members 4. I also place strut'members 7 between the last of the strut members 4 and the l webs of the opposed beams 2', and I use wedges 5," as above described, to give strut members 7 a snug fitagainst the webs of beams2'.* v In the manner, which I havejust nowde-' scribed, the inside of the above "referred to bay isgiven a strut formation in every direction, because members 4 actas strut formations between beams 1, while members 7 act as strut formations between beams 2. 1 I may use any desired device to lock reenforcements8 to beams land 2 while'unde'r tension, but I'have, in the drawing,'illustrat-' ed a similar method, which I have shown in my U. S. A. Paten'tNo. 1,7 94,425, March 8rd, 1981, andw-hich consists of thefollowing arrangementsz- To the topfiange 9, of the 'one'o'f'the'op:

Posed beams-1 I firmly connect. bar 10 b 'means of rivets 11, through a plates 12.

Reenforcements 8 are each made out of one long rod, which is doubled togetherin its middle, so that each'of the reenfor'cements 8 consists of a double rod, having'at its one ex: treme a loop 18, while its other extreme consists of two ends 14'. The loops 18 are passed through the openings which are formed between the parts 9; 10 and-12; The' lock reenforcements 8 to beams 1 and2 while I under tension.

/ I prefer to make beams 1' somewhat smaller in depth-than beams 2-. so that beams 'l may contact the webs of beams '2 between the I flanges of beams 2. The 'crossedreenforceinitial tensioning.

ments 8 will thereby obtain free'playfor their j 60 when wedges are driven into loops '13, and

concrete 17 from the strut formations 4 and thereby hold the tension in the crossed reenforcements 8. Shouldany one of beams 1 or 2 deflect the tension in reenforcements 8 is lost. i

'I now place concrete forms 16 on the strut formations 4 and 7 and thereupon fill concrete 17 around the initially tensioned reenforcements 8 and their attachments to beams 1 and 2, as shown in Fig. 3. The forms 16 isolate,

7. After concrete 17 has set into cohesion with the initially tensioned reenforcements 8 "I remove strut formations 7 and4, as well as forms 16,1.and the hardened concrete 17 itself, will thenact as a strut to hold the ten; sionin reenforcements,8.- V I In my abox e referred to Patent No. 1,7 85,214 I have stated vthe general advantages, which are obtained by'my invention, and those same advantages I secure throughout the whole of the bay in the floor by my invention herein described. V v 1 Various modifications of the structure may be made without departing from. the spirit of my invention.

Iclaim;:- v I V 1. In a device toimpart initial tension into the lreenforcements of a bay composed of two pairs of opposed beams in a concrete floorincluding means to hold said reenforcements to said beams while undertension, the combination of one set of spaced strut members intermediate the one of'said opposed pairs, lateral spaced strut members intermediate the individual members of said first set, said lateral membersextending from said first members tothe other pair of said opposed beams,

7 means to hold said lateral members in place, I

and said firstmembers and said lateral membersisolated'from the concrete, whereby said members may be removed'after said concrete has set into cohesion with said reenforcements. 1 e V '2. In adevice to impart initial tension into thereenforcements of a bay composed of two pairs of opposed beams in a concrete floor including means to hold said reenforc'ements to said beams while under tension, the combi nationof one set of spaced strut members sion with said reenforcements. 3

intermediate the one of said opposed beams, lateral spaced strut members intermediate the l fit'against said beams, and said firstmembers and saidglateral' members isolated from said f concrete, whereby said members may befremoved after-said concrete hasset into cohe- 3. In a device to impart initial tension into the reenforoements of a bay composed of two f' pairs of opposed beams in a concrete floor including means to hold said reenforcements to said beams while under tension, the combination of one, set of spaced strut members intermediate the one of said opposed pairs,lat-

eral spaced strut members intermediate the individual members'ofsaid first'set, said lateral members extending from said first mem bers to the other pair of said opposed beams, flanges on said first members adapted to hold said lateral members in place, wedges adapted forcements. a a I HENRY SORENSEN. A

- individual membersof said first set, said lat- 

